Achieving low wear in a μ-phase reinforced high-entropy alloy and associated subsurface microstructure evolution

Cheng，Zhuo1,2; Yang，Lu1; Huang，Zhikun1; Wan，Tian1; Zhu，Mingyu1; Ren，Fuzeng1

2021-06-15

10.1016/j.wear.2021.203755

WEAR   影响因子和分区

0043-1648

1873-2577

Face-centered cubic (fcc) high-entropy alloys (HEAs) with dispersed hard intermetallic compounds have demonstrated a good combination of high strength-ductility. However, limited research effort has been devoted to exploring their siding wear behavior. Herein, we report the effects of load and sliding velocity on the dry sliding wear behavior FeCoMoNi HEA consisting of an ultrafine-grained (UFG) fcc matrix and a high density of dispersed hard μ-phase. Pin-on-disk dry sliding wear tests show that the FeCoMoNi HEA exhibits low wear rates of the order of 10–10 mm/(N·m) at different test conditions. The wear rates and coefficients of friction generally increase with load and sliding velocity, but wear modes show no apparent change, all in the form of abrasive, oxidation and fatigue wear. Sliding-induced gradient microstructure was formed, consisting of a nanostructured glaze layer at the sliding surface and two typical plastically deformed regions further away from the surface. The presence of massive hard μ-phase particles is suggested to hinder the plastic flow of the fcc matrix during sliding, thereby achieving low wear.

Dry sliding wear High-entropy alloys Intermetallic compounds Microstructure

SCI ; EI

英语

第一 ; 通讯

Guangdong Innovative & Entrepreneurial Research Team Program[2016ZT06C27f9] ; Fundamental Research Program of Shenzhen[JCYJ20170412153039309] ; Shenzhen Peacock Plan[KQTD2016053019134356]

Engineering ; Materials Science

Engineering, Mechanical ; Materials Science, Multidisciplinary

WOS:000640377000001

ELSEVIER SCIENCE SA

20211010038371

Entropy ; Friction ; High strength alloys ; High-entropy alloys ; Intermetallics

Metallurgy and Metallography:531 ; Metallurgy:531.1 ; Chromium and Alloys:543.1 ; Iron Alloys:545.2 ; Thermodynamics:641.1 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85102014685

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin,China

Cheng，Zhuo,Yang，Lu,Huang，Zhikun,et al. Achieving low wear in a μ-phase reinforced high-entropy alloy and associated subsurface microstructure evolution[J]. WEAR,2021,474-475.

Cheng，Zhuo,Yang，Lu,Huang，Zhikun,Wan，Tian,Zhu，Mingyu,&Ren，Fuzeng.(2021).Achieving low wear in a μ-phase reinforced high-entropy alloy and associated subsurface microstructure evolution.WEAR,474-475.

Cheng，Zhuo,et al."Achieving low wear in a μ-phase reinforced high-entropy alloy and associated subsurface microstructure evolution".WEAR 474-475(2021).